Aspirator



FIG. 1 is a left side elevation view of the aspirator;

FIG. 2 is a front elevation view of the aspirator;

FIG. 3 is a right side elevation view of the aspirator;

FIG. 4 is a rear elevation view of the aspirator;

FIG. 5 is a top elevation view of the aspirator; and,

FIG. 6 is a bottom elevation view of the aspirator.

The broken lines represent features that are not part of the claimed design. 

The ornamental design for an aspirator, as shown and described. 